Galapagos Species Database

The Galapagos Species Database shares the information about the species from our Natural History Collections.

Pheidole williamsi Wheeler, 1919

hormiga, Ant

Minior of P.williamsi in lateral view Photo: ICCDRS Collection.
Minior of P.williamsi in lateral view Photo: ICCDRS Collection.

Taxonomy

Domain
Eukaryota

Kingdom
Animalia

Phylum
Arthropoda

Class
Insecta

Order
Hymenoptera

Suborder
Apocrita

Superfamily
Vespoidea

Family
Formicidae

Section
Pheidolini

Genus
Pheidole

Species
williamsi

Taxon category: Accepted

Origin: Endemic

Distribution

Map of specimen collection localities or observation records for this species in our collections database.

Distribution: Albany, Bainbridge #1, Bainbridge #2, Bainbridge #3, Bainbridge #4, Bainbridge #5, Bainbridge #6, Baltra, Bartolome, Beagle, Bowditch South, Daphne Mayor, Fernandina, Floreana, Gardner (next To Floreana), Isabela, Mariela Grande, Mariela Mediana, Pinta, South Plaza, Rabida, Santiago, San Cristobal, Santa Cruz, North Seymour, Santa Fe, Tortuga

References

  • Herrera, H. W., Tocora, M. C., Fiorentino, G., Causton, C. E., Dekoninck, W., & Hendrickx, F. (2024) The ants of the Galápagos Islands (Hymenoptera, Formicidae): a historical overview, checklist, and identification key. ZooKeys, 1191, 151.
  • Herrera, H. W., Baert, L., Dekoninck, W., Causton, C. E., Sevilla, C. R., Pozo, P., & Hendrickx, F. (2020) Distribution and habitat preferences of Galápagos ants (Hymenoptera: Formicidae) Belgian Journal of Entomology 93: 1–60.
  • Linsley, E.G. Usinger, R.L. (1966) Insects of the Galápagos Islands. Proceedings of the California Academy of Sciences Fourth Series 33(7): 113-196.
  • Lubin, Y.D. (1984) Changes in the native fauna of the Galápagos Islands following invasion by the little red fire ant, Wasmannia auropunctata. Biological Journal of the Linnean Society 21(1-2): 229-242.
  • Wheeler, W. (1919) Expedition of the California Academy of Sciences to the Galapagos Islands, 1905-1906. Part 15. The ants of Cocos Island. Proceedings of the California Academy of Sciences 2: 299–308

You are welcome to download and use the information found in this page, acknowledging its source.

This page should be cited as follows:

"Galapagos Species Database, Pheidole williamsi", dataZone. Charles Darwin Foundation, https://datazone.darwinfoundation.org/en/checklist/?species=6793. Accessed 31 October 2026.